Garra surinbinnani, a new species of labeonine from the Mae Khlong basin of Thailand (Teleostei: Cyprinidae)

Abstract

© 2020 by Verlag Dr. Friedrich Pfeil, München, Germany. Garra surinbinnani, new species, is described from the Mae Khlong basin of western Thailand. It is the fourth species of Garra known from the basin and occurs syntopically with the other three species in fast-flowing rocky riffles. Within the Mae Khlong basin, it is most similar to G. fuliginosa from which it differs most obviously in having a bilobed (vs. trilobed) proboscis on the snout and 12-13 (vs. 15-16) circumpeduncular scales. Garra surinbinnani is readily distinguished from other species of Garra with a proboscis in Southeast Asia - G. notata and G. salweenica in the Salween basin, and G. cyrano in the Mekong basin - in having 12-13 (vs. 15-16) circumpeduncular scales, and from all species of Garra outside Southeast Asia with a bilobed proboscis and 12-13 circumpeduncular scales by having 28-31 (vs. 34 or more) lateral-line scales.